Source Books, Toronto, 1970.  Hard cover, 392 pages including Index.  Very good; blue boards with gold lettering on spine; sound binding; outer page block tanned with a bit of age spotting.  Dust jacket with price intact shows edge and cover wear, some rubs, age-spotting, a few short edge tears.  Interior clean and unmarked with tanned pages.  ‘The most urgent requirement of our time however, was no abstract cognition, but defense against the powers questioning our very being.  The truth with all its potential horrors and the driving forces behind it, had to be traced far back, to one cause of the nightmares of today.  A causally common denominator to overpopulation and starvation, to poisoning of nature and to the pressingly invited nuclear war, had to be explored to render possible realistic recommendations for solutions. … Thus this book is a consistent effort for solving our crucial problems, a bold step towards our reconstruction.’ (from flaps)